Muhammad Ali is reported to have been taken to hospital on 19 November.

Muhammad Ali was rushed to hospital last month after becoming unconscious at his wife's home near Phoenix, Star Magazine reported on Friday, citing multiple sources.

The 69-year-old Ali was taken to Scottsdale Healthcare Osborn medical center on 19 November after passing out upon his return to the gated property in Paradise Valley, Arizona.

His wife, Yolanda Ali, dialled 911 around 6.30pm local time, reporting that her husband, who was diagnosed with Parkinson's syndrome in 1984, was unconscious. The 69-year-old Muhammad Ali has Parkinson's syndrome.

It was unclear how long Ali remained in the hospital, but the magazine reported that he spent the Thanksgiving weekend with family in Las Vegas.

The health scare came five days after Ali joined boxing's biggest names to commemorate the life of his legendary former foe Joe Frazier in Philadelphia. Frazier died on 7 November at the age of 67, within weeks of being diagnosed with liver cancer.